Unit ini sudah siap.

In Indonesian, you often do not need a verb like is / am / are when linking a subject to an adjective or noun.

So:

• Unit ini siap = This unit is ready
• literally, it is more like unit this ready

This is very normal in Indonesian. The adjective siap can directly describe the subject unit ini without any separate word for is.

Ini means this.

In Indonesian, demonstratives like ini (this) and itu (that) usually come after the noun, not before it.

So:

• unit ini = this unit
• buku ini = this book
• rumah itu = that house

This is one of the most important word-order differences from English.

Sudah often means already.

In this sentence, it shows that the state of being ready has already been reached.

Compare:

• Unit ini siap = This unit is ready
• Unit ini sudah siap = This unit is already ready / This unit is ready now

In many contexts, English may not always translate sudah as already, but the idea is that the readiness is now completed or established.

Yes, you can.

• Unit ini siap = This unit is ready
• Unit ini sudah siap = This unit is already ready / This unit is ready now

Without sudah, the sentence is more neutral. With sudah, it emphasizes a change or completion: the unit was not ready before, but now it is.

Siap is an adjective, meaning ready.

In Indonesian, adjectives can come directly after the subject and act as the predicate:

• Saya senang = I am happy
• Mereka sibuk = They are busy
• Unit ini siap = This unit is ready

So siap is not a verb here. It is an adjective functioning as the main predicate.

Yes. Unit is used in Indonesian as a loanword.

Depending on context, it can mean things like:

• a unit
• a section
• a module
• sometimes part of a lesson or course

So in a learning context, unit ini could easily mean this unit as in a textbook or course unit.

Usually, no, if you mean this unit.

The normal Indonesian order is:

• unit ini = this unit

If you say ini unit, it can sound like this is a unit or it may feel incomplete unless used in a special context.

So for a noun phrase, remember:

• noun + ini
• noun + itu

Examples:

• buku ini = this book
• mobil itu = that car

There are two common possibilities, with slightly different meanings:

• Unit ini belum siap = This unit is not ready yet
• Unit ini tidak siap = This unit is not ready

Belum is especially common when something is expected to become ready later. Because the original sentence has sudah, the natural opposite is often belum:

• sudah siap = already ready
• belum siap = not ready yet

Siap is usually pronounced as si-ap, in two syllables.

A rough English-style guide:

• si sounds like see
• ap has a short a sound, roughly like ahp

So it is approximately SEE-ahp, not a one-syllable word like English shape.

The whole sentence can be pronounced roughly as:

• u-nit i-ni su-dah si-ap

Yes, very common.

Indonesian often uses sudah + adjective to show that a state has been reached:

• sudah siap = already ready
• sudah selesai = already finished
• sudah benar = already correct
• sudah aman = already safe

So sudah is not only used with verbs. It can also be used with adjectives to mark a completed or achieved state.

Usually sudah is more natural here.

Both sudah and telah can relate to completion, but:

• sudah is very common in everyday speech
• telah sounds more formal and is more often used with verbs than with adjectives

So:

• Unit ini sudah siap = natural and common
• Unit ini telah siap = possible, but less everyday

For most learners, sudah is the best choice here.